#1C3F9E#1C3F9E

#1C3F9E is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.160 H 264.7°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F9E
RGB	rgb(28, 63, 158)
HSL	hsl(224, 70%, 36%)
HSV	hsv(224, 82%, 62%)
CMYK	cmyk(82.3%, 60.1%, 0%, 38%)
CIE-LAB	lab(30.08, 24.31, -55.04)
CIE-LCH	lch(30.08, 60.17, 293.83°)
OKLab	oklab(40.62% -0.0148 -0.1591)
OKLCH	oklch(40.62% 0.16 264.7)
XYZ	xyz(8.4258, 6.2695, 33.1072)
Luminance	0.0627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F9E #9E7B1C

analogous

#1C809E #1C3F9E #3A1C9E

triadic

#1C3F9E #9E1C3F #3F9E1C

tetradic

#1C3F9E #9E1C80 #9E7B1C #1C9E3A

square

#1C3F9E #9E1C80 #9E7B1C #1C9E3A

split-complementary

#1C3F9E #9E3A1C #809E1C

monochromatic

#0A1636 #132A6A #1C3F9E #2554D2 #547AE1

Accessibility & contrast

On white

9.32

#1C3F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1C3F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F9E

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F9E	#FFFFFF	#000000	##FFFFFF
##1C3F9E	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1c3f9e;
/* rgb */ color: rgb(28, 63, 158);
/* oklch */ color: oklch(40.6% 0.160 264.7);

Tailwind

colors: {
  custom: {
    50: '#7073bb',
    500: '#1c3f9e',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f9e;
$custom-light: #7073bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f9e",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 158
  },
  "hsl": {
    "h": 223.846,
    "s": 69.892,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40624,
    "c": 0.15981,
    "h": 264.7
  },
  "luminance": 0.06271
}

Semantic roles & 50–950 ramp

primary

#1C3F9E

secondary

#C4A552

accent

#BD3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C3F9E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →